Temperature sensor LMT70
The LMT70 is an ultra-small, high-accuracy, low-power Complementary Metal Oxide Semiconductor (CMOS) analog temperature sensor with an output enable pin. The LMT70 is suitable for virtually all high-accuracy, low-power cost-effective temperature sensing applications such as Internet of Things (IoT) sensor nodes, medical thermometers, high-precision instrumentation, and battery-operated devices. The LMT70 is also an ideal replacement for RTDs and high precision NTC/PTC thermistors.
Multiple LMT70s can use the output enable pin to share a single analog-to-digital converter (ADC) channel, simplifying the ADC calibration process and reducing the overall cost of precision temperature sensing systems. The LMT70 also features a linear low-impedance output that enables seamless interfacing with off-the-shelf microcontrollers (MCUs)/ADCs. The thermal dissipation of the LMT70 is less than 36μW, and this ultra-low self-heating allows it to maintain high accuracy over a wide temperature range.
The LMT70A has excellent temperature matching, with the temperature of two adjacent LMT70As taken from the same reel differing by at most 0.1°C. Therefore, the LMT70A is an ideal solution for energy metering applications where heat transfer needs to be calculated.
Accuracy:
±0.05°C (typ) or ±0.13°C (max) from 20°C to 42°C
±0.2°C (max) from -20°C to 90°C
±0.23°C (max) from 90°C to 110°C
±0.36°C (max) from -55°C to 150°C
Wide temperature range: ?55°C to 150°C
Temperature matching between two adjacent LMT70As in tape and reel: 0.1°C (max) at 30°C
Ultra-Linear Analog Temperature Sensor with Output Enable Pin
Negative Temperature Coefficient (NTC) Output Slope: -5.19mV/°C
Output on/off switch when R DS on < 80Ω
Wide power supply range: 2.0V to 5.5V
Low Supply Current: 9.2μA (typ) 12μA (max)
Ultra Small 0.88mm x 0.88mm 4-Bump WLCSP (DSBGA) Package
Temperature sensor LMT70
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